Charging method and apparatus, storage medium, and vehicle

Abstract

A charging method, computer readable medium and vehicle that improve the efficiency of electrical vehicle charging. The efficiency is improved by: obtaining a current voltage of a power battery of the vehicle and a maximum rechargeable voltage of an external charger connected to the vehicle; determining a target voltage of the charging port of the vehicle according to the current voltage, the maximum rechargeable voltage and an electrical characteristic of the Booster of the external charger; determining a target request voltage of the vehicle according to the target voltage of the charging port; and controlling the Booster according to the target request voltage, where the external charger charges the vehicle according to the target request voltage.

What is claimed is: 
     
         1 . A charging method, comprising:
 obtaining a current voltage of a power battery of a vehicle and a maximum rechargeable voltage of an external charger connected to the vehicle;   determining a target voltage of a charging port of the vehicle according to the current voltage, the maximum rechargeable voltage and an electrical characteristic of a Booster of the external charger;   determining a target request voltage of the vehicle according to the target voltage of the charging port; and   controlling the Booster according to the target request voltage, wherein the external charger charges the vehicle according to the target request voltage.   
     
     
         2 . The method according to  claim 1 , further comprising:
 obtaining a target demand current of the vehicle and a maximum rechargeable current of the Booster;   determining a target request current of the vehicle according to the target demand current and the maximum rechargeable current; and   requesting a current from the external charger according to the target request current, wherein the external charger in response to the requesting charges the vehicle according to the target request current.   
     
     
         3 . The method according to  claim 1 , wherein, determining the target voltage of a charging port of the vehicle according to the current voltage, the maximum rechargeable voltage and an electrical characteristic of the Booster of the external charger, comprises:
 determining boosting efficiency of the Booster;   determining a first target voltage difference between the target voltage and the current voltage according to the boosting efficiency;   determining a second target voltage difference between the target voltage and the maximum rechargeable voltage; and   determining the target voltage of the charging port according to the first target voltage difference and the second target voltage difference.   
     
     
         4 . The method according to  claim 3 , wherein, determining the target request voltage of the vehicle according to the target voltage of the charging port, comprises:
 determining the target request voltage according to the target voltage of the charging port and the maximum rechargeable voltage, wherein, the target request voltage is greater than the target voltage of the charging port, and the target request voltage is less than the maximum rechargeable voltage.   
     
     
         5 . The method according to  claim 1 , further comprising:
 obtaining an electric quantity change condition of the power battery; and   adjusting the target voltage of the charging port according to the electric quantity change condition, and a preset relationship between a preset electric quantity of the power battery and the target voltage of the charging port.   
     
     
         6 . The method according to  claim 2 , wherein, obtaining the target demand current of the vehicle, comprises:
 obtaining a demand current and a demand voltage of the vehicle, the demand current of the vehicle comprising a demand current of the power battery and demand currents of other high voltage accessories of the vehicle;   determining boosting efficiency of the Booster; and   determining the target demand current according to the demand current and the demand voltage of the vehicle and the boosting efficiency.   
     
     
         7 . The method according to  claim 2 , wherein, determining the target request current of the vehicle according to the target demand current and the maximum rechargeable current, comprises:
 determining the target demand current as the target request current in a condition that the target demand current is less than the maximum rechargeable current; and   determining the maximum rechargeable current as the target request current in a condition that the target demand current is greater than the maximum rechargeable current.   
     
     
         8 . A non-transitory computer readable storage medium, storing computer program instructions thereon, wherein, the computer program instructions that when executed by a processor cause the processor to execute a method comprising:
 obtaining a current voltage of a power battery of a vehicle and a maximum rechargeable voltage of an external charger connected to the vehicle;   determining a target voltage of a charging port of the vehicle according to the current voltage, the maximum rechargeable voltage and an electrical characteristic of a Booster of the external charger;   determining a target request voltage of the vehicle according to the target voltage of the charging port; and   controlling the Booster according to the target request voltage, wherein the external charger charges the vehicle according to the target request voltage.   
     
     
         9 . The non-transitory computer readable storage medium according to  claim 8 , wherein the method further comprises:
 obtaining a target demand current of the vehicle and a maximum rechargeable current of the Booster;   determining a target request current of the vehicle according to the target demand current and the maximum rechargeable current; and   request a current from the external charger according to the target request current wherein the external charger, in response to the request, charges the vehicle according to the target request current.   
     
     
         10 . The non-transitory computer readable storage medium according to  claim 8  wherein the method further comprises:
 determining boosting efficiency of the Booster; 
 determining a first target voltage difference between the target voltage and the current voltage according to the boosting efficiency; 
 determining a second target voltage difference between the target voltage and the maximum rechargeable voltage; and 
 determining the target voltage of the charging port according to the first target voltage difference and the second target voltage difference. 
 
     
     
         11 . The non-transitory computer readable storage medium according to  claim 10 , wherein the method further comprises:
 determining the target request voltage according to the target voltage of the charging port and the maximum rechargeable voltage, wherein, the target request voltage is greater than the target voltage of the charging port, and the target request voltage is less than the maximum rechargeable voltage.   
     
     
         12 . The non-transitory computer readable storage medium according to  claim 8 , wherein the method further comprises:
 obtaining an electric quantity change condition of the power battery; and   adjusting the target voltage of the charging port according to the electric quantity change condition, and a preset relationship between a preset electric quantity of the power battery and the target voltage of the charging port.   
     
     
         13 . The non-transitory computer readable storage medium according to  claim 9 , wherein the method further comprises:
 obtaining a demand current and a demand voltage of the vehicle, the demand current of the vehicle comprising a demand current of the power battery and demand currents of other high voltage accessories of the vehicle;   determining boosting efficiency of the Booster; and   determining the target demand current according to the demand current and the demand voltage of the vehicle and the boosting efficiency.   
     
     
         14 . A vehicle, comprising:
 a memory, storing a computer program thereon; and   a processor that is communicatively coupled to the memory, wherein the processor is configured to:   obtain a current voltage of a power battery of the vehicle and a maximum rechargeable voltage of an external charger connected to the vehicle;   determine a target voltage of a charging port of the vehicle according to the current voltage, the maximum rechargeable voltage and an electrical characteristic of a Booster of the external charger;   determine a target request voltage of the vehicle according to the target voltage of the charging port; and   control the Booster according to the target request voltage, wherein the external charger charges the vehicle according to the target request voltage.   
     
     
         15 . The vehicle according to  claim 14 , wherein the processor, is further configured to:
 obtain a target demand current of the vehicle and a maximum rechargeable current of the Booster;   determine a target request current of the vehicle according to the target demand current and the maximum rechargeable current; and   request a current from the external charger according to the target request current, wherein the external charger, in response to the requesting, charges the vehicle according to the target request current.   
     
     
         16 . The vehicle according to  claim 14 , wherein the processor is further configured to:
 determine boosting efficiency of the Booster;   determine a first target voltage difference between the target voltage and the current voltage according to the boosting efficiency;   determine a second target voltage difference between the target voltage and the maximum rechargeable voltage; and   determine the target voltage of the charging port according to the first target voltage difference and the second target voltage difference.   
     
     
         17 . The vehicle according to  claim 16 , wherein the processor is further configured to:
 determine the target request voltage according to the target voltage of the charging port and the maximum rechargeable voltage, wherein, the target request voltage is greater than the target voltage of the charging port, and the target request voltage is less than the maximum rechargeable voltage.   
     
     
         18 . The vehicle according to  claim 14 , wherein the processor is further configured to:
 obtain an electric quantity change condition of the power battery; and   adjust the target voltage of the charging port according to the electric quantity change condition, and a preset relationship between a preset electric quantity of the power battery and the target voltage of the charging port.   
     
     
         19 . The vehicle according to  claim 15 , wherein the processor is further configured to:
 obtain a demand current and a demand voltage of the vehicle, the demand current of the vehicle comprising a demand current of the power battery and demand currents of other high voltage accessories of the vehicle;   determine boosting efficiency of the Booster; and   determine the target demand current according to the demand current and the demand voltage of the vehicle and the boosting efficiency.   
     
     
         20 . The vehicle according to  claim 15 , wherein the processor is further configured to:
 determine the target demand current as the target request current in a condition that the target demand current is less than the maximum rechargeable current; and   determine the maximum rechargeable current as the target request current in a condition that the target demand current is greater than the maximum rechargeable current.